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Each collection by its own date: when an AD took effect, an SDR’s difficulty date, an accident’s or incident’s event date.

Supplemental type certificates · 11

STC SA4522SWInstallation of Howell TGT instruments.Howell Instruments, IncHowell Instruments, IncSTC SA4429SWInstallation of Howell autotak RPM indicator.Howell Instruments IncHowell Instruments IncSTC SR00031NYInstallation of a Howell engine performance assurance monitoring system.Howell Instruments, IncHowell Instruments, IncSTC SA4576SWHowell H922-8 oil pressure (digital) and oil temperature indicators.Howell Instruments, IncHowell Instruments, IncSTC SA4697SWInstallation of Howell autotemp and autotak indicators.Howell Instruments, IncHowell Instruments, IncSTC SR01163NYInstallation of Howell H2949-501 Engine Indicator/MonitorHowell Instruments, Inc.Howell Instruments, Inc.STC SA2377SWInstall BH185R-289 EGT temperature indicator system.Howell Instruments, IncHowell Instruments, IncSTC SA5518SWReplacement of existing engine indicators (ITT, percent fan RPM, percent turbine RPM, fuel flow, fuel quantity, oil pressure) with Howell Instruments indicators.…RPM, percent turbine RPM, fuel flow, fuel quantity, oil pressure) with Howell Instruments indicators.Air Carrier ElectronicsSTC SA4624SWReplace existing N1, N2 and ITT indicators with Howell autotak and autotemp indicators.Howell Instruments IncHowell Instruments IncSTC SA5769SWReplacement of existing engine indicators (ITT. c/o FAN RPM, c/o TURBINE RPM, FUEL FLOW, FUEL QUANTITY, OIL TEMP & OIL PRESS) with Howell Instruments indicators.…TURBINE RPM, FUEL FLOW, FUEL QUANTITY, OIL TEMP & OIL PRESS) with Howell Instruments indicators.Air Carrier Electronics IncSTC SA02546LAReplacement of the original Pratt and Whitney PT6A-114(A) engine and propeller with a Pratt and Whitney PT6A-140 and 3-blade Hartzell Propeller HC-B3TN-3AF(Y)/T10890CN(K)-2, also Ametek MG94K-2 325 AMP Starter Generator, Howell Instruments powerplant indicating system, and associated equipment…MG94K-2 325 AMP Starter Generator, Howell Instruments powerplant indicating system, and associated equipmentBlackhawk Modifications Inc.